Improvement in double-mold-board plows



S. GREGORY.

- Plow.

No. 1,008. Patented Nov., 14, 1838.

UNITED STATES PATENT OFFICE.

STEPHEN GREGORY, OF SAW PITTS, NEW YORK.

IMPROVEMENT IN DOUBLE-MOLD-BOARD PLOWS.

Specification forming part ot Letters Patent No. 1,008, dated November 14, 1838-.

To all 'whom it may concern:

Be it known that I, STEPHEN GREGORY, of Saw Pitts, otherwise Port Chester, of Westchester county, State of N ewYork,farmer and agricultural-machine maker, have made certain new and useful improvements in the construction of plows intended for boeing, plowing, and hilling Indian corn, or plowing or boeing potatoes by workin g between the rows to each side, or for performing other similar operations, such improvementsbeing intended to allow ot changing the mold-pieces to increase the breadth or spread, or to repair the parts when injured, for which improvement I seek Letters Patent of the United States; and I do hereby declare that the said improvements and the mea-ns ot' constructing and using the same are fully set forth and shown in the following description and in the drawings attached to and making a part of this specification, wherein- Figure l is a side projection of a plow with said improvements, and Fig. 2 is a representation ot' the situation and connection ot' the parts when in use, seen from below or upside down, and the same letters of reference apply to the similar parts in each ligure. The other gures are separately referred to.

A. is the plow-beam; B, the handle, with a cross-holder near the top. Gis a center standard or head-piece and heel-piece, shown as cast or formed in one piece ot' metal, but may be t'ormedin two parts, secured together byserews or wedges, whose upper part goes through the beam and is secured by a cross wedge, a, through a small mortise. The heel is formed with a socket-mortise, which receives the lower end of the handle B at b, where it is secured by a pin.

On each side ot' the head-piece the line c y forms a rabbet, which is dovetailed forward,

a small mortise in the head-piece, and the moldpieces are steadied laterally each by a small cross-piece ot' wood or metal, h h, one end of which enters a small flanged hole on the inside ot the mold-piece, and the other end enters a hole prepared to receive it in the lower part of the handle B.

The lower and fore part ofthe head-piece G is elongated forward at t', and spreads on each side, as shown by dotted lines in Figs. 1 and 2, and is tapered forward and beveled on each side to receive the share D, (shownin plan from below in Fig. 6 and in section in Fig. 7,)Which is cast or formed in metal to tit as a dovetail on the part t', and is made with a wingon each side to lead with the mold-pieces, and when slipped on from the front is secured bya crossvwhen injured and new ones mounted, so long as the head-piece remains uninjured.

I do not claim to have invented any of the parts above described, the same taken separately being well known, except as hereinafter stated.

I claiml. The application of the dovetailed rab'oet and cheeks on both sides the head-piece to receive corresponding parts in the fore end of the mold-pieces, by which wider or narrower mold-pieces may be used on the same standards or head-piece.

2. The mode of applying the dovetailed `cross-wedge to secure the movable doublewinged share as applicable to effect the intended purposes. 4

In witness whereof I have hereunto set my hand and seal, in the city of New York, on the 14th day of September, 1838, in the presence of the undersigned witnesses.

STEPHEN GREGORY.

Witnesses W. TERRELL, W. J, TERRELL. 

